php_gd2.dll not found

I am thoroughly confused. I am working on a Windows XP box. I have just upgraded my dev environment to Apache 2 (2.0.55, where it was), php 5.1.2 (PHP 5.1.2 zip <http://www.php.net/get/php-5.1.2-Win32.zip/from/a/mirror> package), MySQL 5.0.20a. Anomaly 1: I carefully navigated the MySQL mess, got the required DLLs into my /ext folder, noted where extensions are found in php.ini, uncommented the lines to load mysql and php_gd2. MySQL drivers load fine, so I am uncommented correctly and have correctly designated the folder where extensions are to be found. I continue to get a message that php_gd2 is not found. The message lists the correct path and directory, so I have to suspect that this particular php_gd2 does not work, does not work with php5, or has otherwise gotten munged: PHP Startup: Unable to load dynamic library 'c:\php\ext\php_gd2.dll' - The specified procedure could not be found. I have tried also adding the php_gd2.dll file to the WINDOWS\system32 folder, as well. Makes no difference, so I have removed those files. Anomaly 2: When I do a "phpinfo();" to see what is actually loaded (and to ensure that the correct php.ini is being loaded, etc.), among the info is the notice that I am using php 5.0.3-dev. I get the same info when I telnet to localhost. What might I be doing wrong? Is there a patch for php_gd2.dll that I have missed? Have I somehow downloaded the wrong php version, or could something simply have gotten corrupted? Thanks, Ari